求助 com.github.unidbg.arm.backend.BackendException

[dddNevermore]

先贴报错
com.github.unidbg.arm.backend.BackendException
at com.github.unidbg.linux.android.dvm.DalvikVM$31.handle(DalvikVM.java:498)
at com.github.unidbg.linux.ARM32SyscallHandler.hook(ARM32SyscallHandler.java:103)
at com.github.unidbg.arm.backend.UnicornBackend$6.hook(UnicornBackend.java:305)
at unicorn.Unicorn$NewHook.onInterrupt(Unicorn.java:128)
at unicorn.Unicorn.emu_start(Native Method)
at com.github.unidbg.arm.backend.UnicornBackend.emu_start(UnicornBackend.java:331)
at com.github.unidbg.AbstractEmulator.emulate(AbstractEmulator.java:370)
at com.github.unidbg.AbstractEmulator.eFunc(AbstractEmulator.java:446)
at com.github.unidbg.arm.AbstractARMEmulator.eFunc(AbstractARMEmulator.java:220)
at com.github.unidbg.Module.emulateFunction(Module.java:158)
at com.github.unidbg.linux.android.dvm.DvmObject.callJniMethod(DvmObject.java:133)
at com.github.unidbg.linux.android.dvm.DvmClass.callStaticJniMethodObject(DvmClass.java:292)
at com.anjuke.mobile.sign.SignUtil.getSign0(SignUtil.java:45)
at com.anjuke.mobile.sign.SignUtil.sign(SignUtil.java:57)
at com.anjuke.mobile.sign.SignUtil.main(SignUtil.java:72)

我debug了一下:
DalvikVM.java 496
DvmMethod dvmMethod = dvmClass == null ? null : dvmClass.getMethod(jmethodID.toIntPeer());
这里我的理解是 从这个类中根据hash值找到方法? 然后没找到

其他尝试:
我报错的原因极大可能是需要使用Context
当前so的方法中,我试了不需要Context的方法,是正常的
其他so的方法中,Context可以传空,也能正常执行

上源码:
package com.anjuke.mobile.sign;

import com.github.unidbg.AndroidEmulator;
import com.github.unidbg.linux.android.AndroidEmulatorBuilder;
import com.github.unidbg.linux.android.AndroidResolver;
import com.github.unidbg.linux.android.dvm.*;
import com.github.unidbg.linux.android.dvm.jni.ProxyClassFactory;
import com.github.unidbg.linux.android.dvm.jni.ProxyDvmObject;
import com.github.unidbg.memory.Memory;

import java.io.File;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.HashMap;
import java.util.Map;

public class SignUtil {

private final AndroidEmulator emulator;

private final DvmClass cSignUtil;
private final VM vm;

public SignUtil() {
    emulator = AndroidEmulatorBuilder.for32Bit()
            .setProcessName("")
            .build();
    Memory memory = emulator.getMemory();
    memory.setLibraryResolver(new AndroidResolver(23));
    vm = emulator.createDalvikVM();
    vm.setDvmClassFactory(new ProxyClassFactory());
    vm.setVerbose(true);
  DalvikModule dm = vm.loadLibrary(new File("/Users/ddd/Desktop/libJniHelper.so"), false);
  cSignUtil = vm.resolveClass("com/vip/sdk/base/jni/JniHelper");
    dm.callJNI_OnLoad(emulator);
}

public void destroy() throws IOException {
    emulator.close();
}

public String getSign0(String p1, String p2, Map<String, String> map, String p3, int i) {
  DvmObject contexts =vm.resolveClass("android/content/Context").newObject(null);
  String methodSign = "getSignHash(Landroid/content/Context;Ljava/util/Map;Ljava/lang/String;)Ljava/lang/String;";
  StringObject obj = cSignUtil.callStaticJniMethodObject(emulator, methodSign, contexts,ProxyDvmObject.createObject(vm, map),"2");

 /* String methodSign = "get3DesKey()Ljava/lang/String;";
  StringObject obj = cSignUtil.callStaticJniMethodObject(emulator, methodSign);*/
  return obj.getValue();
}

private synchronized String sign(String p1, String p2, Map<String, String> paramMap, String p3, int i) {
    Map<String, String> map = new HashMap<>();
    for (String key : paramMap.keySet()) {
        map.put(key, paramMap.get(key));
    }
    return getSign0(p1, p2, map, p3, i);
}


public static void main(String[] args) throws Exception {
    Map<String, String> paramMap = new HashMap<String, String>() {{
        put("a", "b");
        put("b", "b");
    }};
    String p1 = "aa";
    String p2 = "bb";
    String p3 = "cc";
    int i = 10;

    SignUtil signUtil = new SignUtil();
    String sign = signUtil.sign(p1, p2, paramMap, p3, i);
    System.out.println("sign=" + sign);
    signUtil.destroy();
}

}

希望大佬帮我看下什么问题,谢谢!

[Pr0214]

methodID问题

[dddNevermore]

methodID问题

谢谢大佬,已经解决!

[Pr0214]

嘤嘤嘤

[dddNevermore]

嘤嘤嘤

大佬,我又碰到一个问题
入参一样的,返回的值不一样,但是返回值是3个值中随机一个,这是这个so的问题吗

[dddNevermore]

嘤嘤嘤

解决了,是我疏忽了,打扰大佬了 嘤嘤嘤

[hhxdestiny]

(Landroid/content/Context;Ljava/util/Map;Ljava/lang/String;)

请问大佬如何解决的methodID问题

[kevinsir]

请问大佬如何解决的methodID问题

[wengxianxun]

大佬怎么解决的，遇到同样的问题

[nubuntu]

same here, still no info about how to solve it